The "Simple Life" co-stars were seen laughing and joking together as they used to back "in the good times".
Paparazzi spotted the two taking lunch at the Dan Tanas restaurant in Los Angeles, this Sunday.
However, none of the two 25-year-old girls made any comment related to the possible make-up.
The reason for which childhood friends Paris Hilton, famous for her naked sex tape, and Nicole Richie quarreled in 2005 remains unknown, but there are rumors that the Hilton heiress was seriously bothered by Nicole screening her sex tape at one party.
"I will not go into the details of what happened. All I will say is that Nicole knows what she did, and that's all I am ever going to say about it," said Paris in 2005, referring to her fight with Lionel Richie's daughter.
It is also rumoured that Paris was annoyed by her friend's growing popularity and feared remaining in Nicole's shadow, which she obviously couldn't endure.
The two celebrities are about to start filming for the new series of the "Simple Life" so harmony between the two sexy divas will benefit the return to the sets.
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